Jagannathan, R. ; Simon, R. ; Sudarshan, E. C. G. ; Vasudevan, R. (1987) Dynamical maps and nonnegative phase-space distribution functions in quantum mechanics Physics Letters A, 120 (4). pp. 161-164. ISSN 0375-9601
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0375-9601(87)90327-6
Abstract
Using the formalism of dynamical maps it is shown that if a quantum measurement process is to be described in terms of a non-negative phase-space distribution obtained by smoothing the Wigner distribution of the quantum state, then the smoothing kernel characterizing the measuring apparatus cannot be an arbitrary Wigner distribution.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 50990 |
| Deposited On: | 27 Jul 2011 12:53 |
| Last Modified: | 12 Jul 2012 06:51 |
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